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2115705132 = 223258769587
BaseRepresentation
bin111111000011011…
…0001100100101100
312110110001221211100
41332012301210230
513313110031012
6545534523100
7103300124352
oct17606614454
95413057740
102115705132
11996295642
124b0666490
13279429438
14160db77d2
15c5b1a8dc
hex7e1b192c

2115705132 has 18 divisors (see below), whose sum is σ = 5348032508. Its totient is φ = 705235032.

The previous prime is 2115705113. The next prime is 2115705133. The reversal of 2115705132 is 2315075112.

2115705132 is a `hidden beast` number, since 2 + 11 + 570 + 51 + 32 = 666.

2115705132 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×21157051322 = 8952416411142274848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2115705096 and 2115705105.

It is not an unprimeable number, because it can be changed into a prime (2115705133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29384758 + ... + 29384829.

Almost surely, 22115705132 is an apocalyptic number.

It is an amenable number.

2115705132 is an abundant number, since it is smaller than the sum of its proper divisors (3232327376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2115705132 is a wasteful number, since it uses less digits than its factorization.

2115705132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58769597 (or 58769592 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 2115705132 is about 45996.7948013772. The cubic root of 2115705132 is about 1283.7635675535.

The spelling of 2115705132 in words is "two billion, one hundred fifteen million, seven hundred five thousand, one hundred thirty-two".

Divisors: 1 2 3 4 6 9 12 18 36 58769587 117539174 176308761 235078348 352617522 528926283 705235044 1057852566 2115705132